Compression grease-cup.



MTENTBD AUG. 25, 190s.

E'. N. GARDNER.

GOMPRESSIGN GREASE -APPLIOATION FILED NOV, 30, 1900.

No MODEL.

MI Manga/J MM M ple or loosen the joint between these parte,

.as the force applied by such wrench orl otherY tool comes directly upon the nipple and not at all upon the nase A. In other words, the

flat-sided part of the device to which thewrench is applied being integral with the screwLthreaded part bywhieh the lubricator as a whole is secured to the part on which it is mounted, the torsional strain on the flatsided part is transmitted directly to the screwthreaded end of the nipple and has no eieot on the vjoint by which the'nipple is attached to the body ofthe device. Sz

As a further improvement in devices of the character above described, thebase A is rel ceased iu its upper face or formed with an annular flange et and provided around themargin of said recess with a plurality of holdin" ro'ections or lu s a, which extend radially inward from said flange. The holding lugs or projections thus formed enable the f aperture.

As a stili further improvement in greaseoups of the character described, the compression-cap B is made or formed of sheet metal of light gage having screw-threads spun or pressed in its cylindrical wall to engage the external screw-threads a4 on the periphery of the base. The cap thus constructed of sheet metal is made slightly ellip- .1 I claim as my invention ing ,the opposite portions-of its eide wall together. When thus made of elliptical shape,

the internal diameter will be approximately f the same asithe external diameter of the lease,

so that it" may be easily forced over the circular periphery of said base. The' strain .brought upon the eide Wall by its distortion from its normal or elliptical shape in the act of placing'fit upon the base causes the cap to grip the opposite sides of the base with yielding orspring pressure. The cap is made of such size that it will beforced into circular form by the base when it is placed on the latter and will fit the' screw-threaded the grease at any point in the circumference of the base. Such pressure of the cap 'upon the base also serves to hold the cap in position to which it is adjusted-by the friction resulting from suchpressure and prevents the cap beingshaken or jarred out of position bythe jarring of moving machinery with which the lubricatofr may be connecte A compression grease-cup, comprising a circular base 4having; its perimeter" screwthreaded, and a sheet-metal screw-threaded compression cap made slightly elliptical to afford yielding pressure of its opposite eide portions against the said base.

In testimony that i claim the foregoing; as my invention Il affix my signature, in presence of two witnesses, this 7th day of November, A. D. 1900.

FREDEMCK NQ eri-Runen.

SS base so .tightly as to prevent the escape of' 

